Sheet-slitting device for printing-presses.



No. 666,935. Patented Jan. 29, I901. T. M. NORTH.

SHEET SLITTING DEVICE FOR PRINTING PRESS ES.

(Application filed iwov. e, 1900.

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No. 666,935. T. M. NORTH. SHEET SLITTING DEVICE FOR PRINTING PBESSES. (Application filed. Nov. 8, 1900\ (No'ModaL) I Juzim mwm N I No. 666,935. Patented Jan. 29, I90L. T. NI. NORTH.

SHEET SLITTING DEVIGEFOR. PRINTING PRESSESL (Application fl led Nov. 8, 1900.

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UNTTED STATES ATENT FFICE.

THOMAS M. NORTH, OF PLAINFIELD, NEW JERSEY, ASSIGNOR TO THE ALUMINUM PLATE AND PRESS COMPANY, OF SAME PLACE AND NEW YORK, N. Y.

SHEET-SLITTING DEVlCE FOR PRiNTlNG-PRESSES.

SPECIFICATION forming part of Letters Patent No. 666,935, dated January 29, 1901.

Application filed November 8, 1900- Serial No. 35,835. (No model.)

To all whom it may concern:

Be it known that I, THOMAS M. NORTH, a subject of the Queen of Great Britain, residing at Plainfield, in the county of Union and State of New Jersey, have invented certain new and useful Improvements in Sheet-Slitting Devices for Printing-Presses, of which the following specification, taken in connection with the accompanying drawings, is a full, clear, and exact description.

Printing-presses as now commonly constructed are provided with sheet-slitting devices which cooperate with the delivery-cylinder to cut the successive sheets in two as they are delivered from the press; but as the slitting devices are not adjustable transversely of the press it is necessary to accurately adjust the printing-forms upon the plate or form cylinder to correspond with the position of the slitting device to insure the separation of the sheets in-the center of the margin which divides the printing. This operation of accurately adjusting the printing forms consumes a great deal of time and is very troublesome.

The object of my invention is to obviate the necessity for such fine adjustment of the printing-forms upon the plate-cylinder; and I accomplish this object by providing a sheetdelivery cylinder and a slitting device which are capable of a limited adjustment transversely of the press, so that the sheet-slitting device may be placed in the required position to suit the location of the forms upon the plate-cylinder. Y

In carrying my invention into practice the sheet-delivery cylinder of the press is journaled at one end in a transversely-adj ustable bearing-box having means for shifting it and at its other end in a stationary bearing in which it rotates and is capable of shifting laterally of the press, and the circular sheetslitter which operates in the circumferential groove of the delivery-cylinder, is also capable of transverse adjustment to suit the position of the delivery-cylinder. The sta-.

tionary cam which operates the delivery-cylinder grippers is mounted upon the adjustable bearing of the delivery-cylinder, so that it is in constant operative relation with the grippers irrespective of the adjusted position of the delivery-cylinder.

In order that my invention may be fully understood, I will first describe the same with reference to the accompanying drawings and afterward point out with more particularity the features of novelty in the annexed claims.

In the said drawings, Figure 1 is a side elevation of part of a printing-press embodying my invention. Fig. 2 is a plan view of a part of the same. Fig. 3 is a detail view of the delivery-cylinder and cutting device. Fig. 4 is a vertical longitudinal section of one of the journals of the delivery-cylinder.

1 is a part of the frame of a printing-press carrying the form-cylinder 2, impression-cylinder 3, and delivery-cylinder 4. 5 is a slitter or cutter mounted on the rod or shaft 6 and adapted to operate in the annular groove 7 in the said delivery-cylinder 4. The slitter or cutter is capable of longitudinal adjust ment on the shaft 6 and after adjustment is firmly secured thereto by means of the setscrew 8. The delivery-cylinder has journals 9 10, one of which, 10, is capable of a longitudinal motion in its bearing 11, while the other is arranged in the manner which I will now describe.

12 represents a journal-box upon the machine-frame, carryipg the journal-bearing 13 in which revolves the journal 9. The journal 9 is secured against longitudinal motion in its bearing 13 by the plate 14, which is secured to the end of the journal by screw 15 and the shoulder 16. The bearing 13 is somewhat longer than the boX 12, projecting from each side thereof, and is capable of a longitudinal motion in said box. The hearing has, on the end farthest from the deliverycylinder, a depending flange l7, havinga hole through which passes a set-screw 18, which is threaded into the journal-box 12. The flange 17 is confined between the screw-head 22 and the collar 19, secured on the screw. A recess 20 receives the collar 19 when the screw moves inwardly in the frame-bearing. An auxiliary set-screw 21 in the flange 17 is adapted to bind the set-screw 18 after the latter has been adjusted to the desired position. It is evident that when the set-screw 18 is screwed in or out the collar 19 and the head 22, hearing against the flange 17, will cause the bearing 13 to move one way or the otherlongitudinally of the jou rnal-looX 12.

The stationary gripper-operating cam 23, which in ordinary construction is attached rigidly to the frame of the machine, is mounted on the adjustable bearing 13 and firmly secured thereto, so that Whatever may be the position to which the bearing is shifted the cam will always occupy the same position relatively to the cam-roller 24 of the gripperfinger-tripping device.

\Vhen now it is desired to regulate the slitting or cutting of the sheets, it is only necessary that the slitter or cutter 5 be loosened on the shaft 6 and moved along said shaft, while at the same time the delivery-cylinder is caused to move in the same direction as said slitter by the adjusting means described.

The gripper-finger-tripping device is the same as the type commonly used in this class of machines and comprises the rod 25, running through the delivery-cylinder from end to end and carrying the grippers 26 and having on the end nearest the cam 23 the lever 27, to one end of which is attached the camroller 2*, adapted to bear on the cam 23, while to the other end is attached the rod 28, fulcrumed at 29 and carrying the spring 30.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. 111 a printingpress, the combination with the form or plate cylinder and the impression-cylinder, of an adjustable deliverycylinder capable of adjustment transversely of the machine, and an adjustable slitter or cutter cooperating with said delivery-cylinder, as set forth.

2. In a printing-press, the combination with the form and impression cylinders, of an adjustable delivery-cylinder, means for adjusting said delivery-cylinder transversely of the machine, an annular groove in said delivery-cylinder, a rod or shaft journaled in the frame of the machine and lying parallel to said delivery-cylinder, and a slitter or cutter operating in said annular groove and adjustably mounted on said rod or shaft, as set forth.

3. In a printing-press, the combination with the form or plate cylinder and the impression-cylinder, of an adjustable deliverycylinder, an adjustable sheet slitter or cutter cooperating with said delivery-cylinder, ad-

justing means for said delivery-cylinder situated at one end thereof and comprising a journal-box, a journal-bearing mounted in said journal-box and capable of adjustment therein, transversely of the press, and means for securing the journal in the desired adjusted position, as set forth.

4. In a printing-press, the combination with the form or plate cylinder and the impression-cylinder, of an adjustable deliverycylinder, an adjustable sheet slitter or cutter cooperating with said delivery cylinder means for adjusting said delivery-cylinder transversely of the press comprising a journal-box in the machine-frame, a journal-bearing mounted in said journal-box and shiftable therein transversely of the press, said delivery-cylinder being journaled at one end in said journal-bearing, means for preventing said cylinder-journal from moving longitudinally in said journal-bearing, a flange on said journal-bearing, a set-screw operating in the machine-frame and engaging said flange to cause said journal-bearing to be moved transversely of the press, and means for securing the journal-bearing in the desired position as set forth.

5. In a printing-press, the combination of the form or plate cylinder and the impression-cylinder, of an adjustable delivery-cylinder, adjustable means for said deliverycylinder comprising a journal-box, a journalbearing mounted in said journal-box, means for preventing the journal from moving longitudinally of said journal-bearing, means for causing said journalbearing to move transversely of the press, an adjustable slitter or cutter operating in conjunction with said delivery-cylinder, gripper mechanism carried by said delivery-cylinder, and a gripper-operating cam mounted on the adjustable journal-bearing of the delivery-cylinder and adapted to operate said gripper mechanism, as set forth.

6. In a printing-press, the combination of the form and impression cylinders, with the adjustable delivery-cylinder, gripper mechanism carried by the delivery-cylinder, an adjustable journal in which the delivery-cylinder is journaled, adjustable slitters or cutters cooperating with said adjustable deliv cry-cylinder, and a gripper-operating cam mounted upon said adjustable journal-bearing as set forth.

THOMAS M. NORTH.

Witnesses:

J. GREEN, HARRY E. KING, 2d. 

